[PATCH net-next v3 4/4] page_pool: remove PP_FLAG_PAGE_FRAG flag

Yunsheng Lin
2023-06-09T13:20:11Z

PP_FLAG_PAGE_FRAG is not really needed after pp_frag_count
handling is unified and page_pool_alloc_frag() is supported
in 32-bit arch with 64-bit DMA, so remove it.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
CC: Lorenzo Bianconi <lorenzo@kernel.org>
CC: Alexander Duyck <alexander.duyck@gmail.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +--
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 +-
drivers/net/wireless/mediatek/mt76/mac80211.c | 2 +-
include/net/page_pool.h | 7 ++-----
net/core/skbuff.c | 2 +-
6 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index b676496ec6d7..4e613d5bf1fd 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4925,8 +4925,7 @@ static void hns3_put_ring_config(struct hns3_nic_priv *priv)
static void hns3_alloc_page_pool(struct hns3_enet_ring *ring)
{
struct page_pool_params pp_params = {
- .flags = PP_FLAG_DMA_MAP | PP_FLAG_PAGE_FRAG |
- PP_FLAG_DMA_SYNC_DEV,
+ .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
.order = hns3_page_order(ring),
.pool_size = ring->desc_num * hns3_buf_size(ring) /
(PAGE_SIZE << hns3_page_order(ring)),
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index a79cb680bb23..404caec467af 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -1426,7 +1426,7 @@ int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id,
return 0;
}

- pp_params.flags = PP_FLAG_PAGE_FRAG | PP_FLAG_DMA_MAP;
+ pp_params.flags = PP_FLAG_DMA_MAP;
pp_params.pool_size = numptrs;
pp_params.nid = NUMA_NO_NODE;
pp_params.dev = pfvf->dev;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index cd4ac378cc63..c5f67e2ab695 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -842,7 +842,7 @@ static int mlx5e_alloc_rq(struct mlx5e_params *params,
}

pp_params.order = 0;
- pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV | PP_FLAG_PAGE_FRAG;
+ pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
pp_params.pool_size = pool_size;
pp_params.nid = node;
pp_params.dev = rq->pdev;
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 467afef98ba2..ee72869e5572 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -566,7 +566,7 @@ int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q)
{
struct page_pool_params pp_params = {
.order = 0,
- .flags = PP_FLAG_PAGE_FRAG,
+ .flags = 0,
.nid = NUMA_NO_NODE,
.dev = dev->dma_dev,
};
diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index c135cd157cea..f4fc339ff020 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -46,10 +46,8 @@
* Please note DMA-sync-for-CPU is still
* device driver responsibility
*/
-#define PP_FLAG_PAGE_FRAG BIT(2) /* for page frag feature */
#define PP_FLAG_ALL (PP_FLAG_DMA_MAP |\
- PP_FLAG_DMA_SYNC_DEV |\
- PP_FLAG_PAGE_FRAG)
+ PP_FLAG_DMA_SYNC_DEV)

#define PAGE_POOL_DMA_USE_PP_FRAG_COUNT \
(sizeof(dma_addr_t) > sizeof(unsigned long))
@@ -235,8 +233,7 @@ static inline struct page *page_pool_alloc_frag(struct page_pool *pool,

size = ALIGN(size, dma_get_cache_alignment());

- if (WARN_ON(!(pool->p.flags & PP_FLAG_PAGE_FRAG) ||
- size > max_size))
+ if (WARN_ON(size > max_size))
return NULL;

/* Don't allow page splitting and allocate one big frag
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 7c4338221b17..ca2316cc1e7e 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5652,7 +5652,7 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
/* In general, avoid mixing page_pool and non-page_pool allocated
* pages within the same SKB. Additionally avoid dealing with clones
* with page_pool pages, in case the SKB is using page_pool fragment
- * references (PP_FLAG_PAGE_FRAG). Since we only take full page
+ * references (page_pool_alloc_frag()). Since we only take full page
* references for cloned SKBs at the moment that would result in
* inconsistent reference counts.
* In theory we could take full references if @from is cloned and
--
2.33.0